Part 2 (a) A bank conducted a survey to estimate the proportion of its customers who would be interested in using a new app for mobile banking services. The bank found that 68 out of 150 customers are in favour of using the new app. Construct a (i) 95% confidence interval (ii) 90% confidence interval For the proportion of customers who are in favour of the new banking app. Thank you for your afford,

Q: Isabel Myers was a pioneer in the study of personality types. According to one of her surveys, in a…

A: Solution

Q: A researcher found a 95% confidence interval for the proportion of college students who believe in…

A:

Q: A survey reveals that 12% of Americans believe Elvis is still alive, with a margin of error of 4…

A: Given: A survey reveals that 12% of Americans believe Elvis is still alive. A margin of error is 4…

Q: survey to determine if the percentage of adults who use social media has changed from 52%, which was…

A: The sample proportion is computed as follows, The critical value for 96% confidence level, i.e.,…

Q: A survey of 700 non-fatal accidents showed that 167 involved uninsured drivers. Construct a 99%…

A: Given data,n=700x=167Point estimate isp=xn=167700=0.2386Construct a 99% confidence interval?

Q: In a survey of 517 music teachers, 403 said that the video games Guitar Hero and Rock Band have a…

A: Solution: Let X be number of music teachers said that the video games Guitar Hero and Rock Band have…

Q: A study found that for a sample of cars traveling on Interstate 70, the average speed was 70 mph…

A: We have to find margin of error.

Q: Public Policy Polling recently conducted a survey asking adults across the U.S. about music…

A: Given data  N = 571 X = 80 99% confidence interval

Q: A television station surveys 200 customers and finds that 23% of customers watch the evening news.…

A: Given data n=200 p=23% confidence level=99%

Q: A business magazine conducted a survey of 751 employees who had been at their current employer for 5…

A: It is given that sample size n =751 and x = 0.295.

Q: T.J. wants to estimate the percentage of college students who have taken out student loans. He…

A:

Q: Suppose I wanted to know the proportion of students who are paying attention in class, so I give a…

A: Confidence Interval for Proportion A confidence interval is a statistical method that denotes a…

Q: A survey company polls 1,233 voters about whether they plan to vote for the Liberal or the…

A: Sample size 52% of voters prefer the Liberal candidate i.e., Significance level

Q: To devise effective marketing strategies it is helpful to know the characteristics of your…

A: Givensample size(n)=932x=543p^ =xn=543932=0.5826Confidence level(c)=95%α=1-0.95=0.05α2=0.025critical…

Q: A recent study of 85 workers found that 61 people rode the bus to work each day. Find the 95%…

A: Given that  A recent study of 85 workers found that 61 people rode the bus to work each day. Find…

Q: margin of error for a 95% confidence interval is approximately 2 times the standard error.  True…

A: The standard error can be calculated as: SE=σnorSE=sn Here, σ  or s = Standard deviation n = Sample…

Q: magine that you conduct a study and estimate that the prevalence of hypertension among employees of…

A: It is given that the estimated prevalence is 24%.

Q: The 90% confidence interval is from to. (Round to three decimal places as needed.)

A: A poll of 1030 adults in a country was conducted by telephone. Of those surveyed, 139 had…

Q: Form 90%, 95%, and 99% confidence intervals for the proportion of voters who favor the candidate.…

A: Given that Sample size n = 1000 Number of respondents favor the candidate, X = 214 The critical…

Q: Jane wants to estimate the proportion of students on her campus who eat cauliflower. After surveying…

A: Solution: Given that, Estimate the proportion of students on her campus who eat cauliflower n=20 #…

Q: BCD Travel wants to estimate the population proportion of adults who favor historical sites for…

A: p^ = 59% = 0.59Sample size = 24086% confidence level

Q: 324 out of a simple random sample of 400 students hated their online math course. Find a 99%…

A: Given: Number of students that hated the online math course (y) = 324 Number of students (n) = 400…

Q: Software testers have reported their testing results of your teams latest software release. Out of a…

A: Critical value: Consider α = 0.05. Using excel formula “=NORM.S.INV(1-(0.05/2))”, the critical value…

Q: A recent survey suggests that 52% of Americans say dogs are their favorite animals. If 84 people are…

A: As per honor code, we will only answer first question: 1)  p=0.52 n=84, p^=0.42 Use the formula of…

Q: What formulas are used to find the confidence interval? Researchers comparing the effectiveness of…

A: According to the given information in this questionWe need to construct 95% confidence interval

Q: The national average for the percentage of high school graduates taking the SAT is 49%, but the…

A:

Q: A doctor would like to estimate the mean difference in the number of hours of sleep for seniors in…

A: Random sample of 50 high school seniors  Random sample of 50 seniors from the colleges in his county…

Q: In general, when you increase the confidence level for a confidence interval using the same sample…

A: As confidence level increases critical value is going to increase .  Here they given sample…

Q: The Nielsen company surveyed 257 owners of android phones and found that 217 of them planned to get…

A: From the provided information,

Q: What proportion of new drivers fail the written portion of their driver's license examination? You…

A: Given Data: p=196/500=0.392   n=500   z-value corresponding to 95% Confidence level=1.96

Q: As health insurance costs and the number of disabled employees increase, more companies are firing…

A: Confidence Interval: The form of the confidence interval is, CI = Point estimate ± Margin of error…

Q: An internet service provider sampled 540 customers and found that 55 of them experienced an…

A:

Q: A marketing survey involves product recognition in New York and California. Of 558 New Yorkers…

A:

Q: iew 8.2 of your te ect Help tab below fidence interval ca watch Excel videa ew 8.3 of your text ect…

A: In above scenario we have to deal with confidence interval for population proportion. The formula…

Q: A marketing study by Ford Motor Company finds that 320 of the 650 buyers of compact cars were women.…

A: Let the population proportion of women who bought compact cars be P Given:         Sample size n =…

Q: Construct a 95% confidence interval for the proportion of college students who say they own their…

A: Given : n=410 , X=155  , α=0.05 We want to find the 95% confidence interval for the proportion of…

Q: An actuary is interested in estimating the proportion of young adults who plan to have children…

A: We need to construct the 99% confidence interval for the population proportion. We have been…

Q: You want to determine if the proportion of people who will vote for the president next year has…

A:

Q: In a random sample of 250 high school students, it was found that 85.2% (213) of them later…

A:

Q: n a recent Zogby International Poll, nine of 48 respondents rated the likelihood of a terrorist…

A: Given that : x = 9 n = 48

Q: The pizza Shop wanted to determine what proportion of its customers ordered an only cheese pizza.…

A:

Q: Find the margin of error of a 90% confidence interval for the true proportion of teens who would…

A: It is given that Sample size n = 157 Number of teens reported having more than 100 followers on…

Q: Katy Perry is currently the most popular account on Twitter® with about 100 million followers. Mrs.…

A: Given  X=308, n=500, alpha=0.05 90% CI for population proportion

Q: A random sample from a population of adults consists of 67 men and 43 women (a) Give a 95%…

A:

Q: Michelle, a student studying music, randomly sampled fellow music majors and asked whether they…

A: Given information- Confidence interval = (0.09, 0.26) We have to find margin of error. We know that-…

Q: Data are used either to test a hypothesis or to construct a confidence interval, but not both.…

A: Confidence intervals and hypothesis tests are similar during this they're both inferential methods…

Q: in a survey of 692 lesbian, gay, bisexual, or transgender U.S adults 378 said that they consider…

A: